Materials Literature
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Abstract In this communication, the design and the fabrication of a silicon‐glass microsystem for lab‐on‐chip sensing applications have been reported. Each component has been realised using wet etch process and the porous silicon (PSi) technology, while the final device has been obtained intimately joining all element…
Exchange bias may be used to couple a normal ferromagnet to a ferroelectric antiferromagnet and thus create a multiferroic system with nonzero magnetization. In implementing this idea the authors developed a synthesis method for composite films of nanoscale clusters of ferromagnetic MnFe2O4 embedded in multiferroic Mn…
The main goal of this work is to generate a method to control the magnetic properties of magnetostrictive metals (anisotropy and coercive field) without affecting the total magnetostriction. Multilayers of amorphous (Fe80Co20)80B20 are sputtered changing alternatively the anisotropy direction of the successive layers.…
Abstract Deep straight macropores in n‐type Si have been completely filled with copper (Cu). Homogeneous metal deposition inside the deep pores was achieved by means of electroplating using a solution containing only CuSO 4 mixed with H 2 SO 4 and an optimized process that begins at the bottom of the pores. Pores as d…
The charge density distributions of layered oxysulfide (LaO)CuS, known as a p-type transparent semiconductor, have been investigated by analyzing the synchrotron radiation powder diffraction profile with the maximum entropy method/Rietveld method. The bonding character of the Cu–S bond is revealed to be covalent. Mean…
<div class="htmlview paragraph">This paper presents a study of urea SCR catalyst aging characteristics and implementation into an analytical model that complements laboratory based experiments for a dynamometer-aged SCR brick. The model calibration is based on measured data taken from a 120k-mile simulated dynam…
The authors have investigated the spin-dependent transport properties of GaMnAs-based “three-terminal” semiconductor spin hot-carrier transistor (SSHCT) structures. The emitter-base bias voltage VEB dependence of the collector current IC, emitter current IE, and base current IB shows that the current transfer ratio α…
Grain boundary motion during grain growth or recrystallization is considered as a diffusion process of atomic movement across the boundary. It can be accompanied by subgrain rotation or nanograin rotation. However, grain boundary migration can be achieved also by dislocation motion or creep. The evidence is the power…
<div class="htmlview paragraph">Catalyzed diesel particulate filter systems have now been successfully introduced and implemented in Europe. In the meantime, automotive manufacturers are working on the second generation of catalytic filters with the aim of reducing the overall system costs. In particular savings…
Abstract The formation process of ordered macropores in a prepatterned p‐type silicon wafer was investigated. FE‐SEM observation focusing on the early stage of the pore growth clarified the two‐step process of macropore formation, whose first step was isotropic pore expansion from prepared etch pits and the second was…
<div class="htmlview paragraph">One of the main challenges in developing cost-effective diesel particulate filters is to guarantee a thermally safe regeneration under all possible conditions on the road. Uncontrolled regenerations occur when the soot reaction rate is so high that the cooling effect of the incomi…
<div class="htmlview paragraph">A novel CFD simulation technique has been developed that unites realistic three-dimensional resolution of diesel particulate filter systems with computational efficiency. Three-dimensional resolution of the thermofluiddynamic behaviour during transient soot loading and regeneratio…
The structural characteristics of organically passivated CdSe nanocrystals (NCs) were investigated with x-ray diffraction and extended x-ray absorption fine structure. As the NC size decreases, the axial bond length R(1) for an atomic tetrahedron extends but the equatorial bond length R(2) contracts, with a similar te…
The dynamics of cellulase binding and the activity on thin films of cellulose by using a piezoelectric sensing device (Quartz Crystal Microbalance with Dissipation monitoring, QCM-D) were examined. Upon exposure of the cellulose film to enzyme mixtures, a reduction in the sensor's frequency due to molecular binding is…
This chapter describes the formation of various thermally reversible polymer architectures based on the Diels-Alder reaction occurring between furan and maleimide moieties. These functional materials are then discussed with respect to different areas of application.
Abstract Combinatorial methods and informatics are applied to the study of complex property‐structure‐processing relationships during interpenetrating polymer network formation in an epoxy/acrylate system. Principal component analysis of a dataset that covers different compositions and process sequences successfully i…
Co Fe 2 O 4 films with different thicknesses (40–200nm) were prepared on sapphire using pulsed laser deposition at different substrate temperatures. The films on (0001) sapphire showed a (111) epitaxial structure even at a low deposition temperature of 150°C. The coercivity up to 8.8kOe could be achieved in the 40nm f…
Abstract Nanopore covered microporous porous silicon (PS) interfaces have been formed to provide an active scaffolding for the creation of sensor and microreactor configurations. Rapidly responding (≤2s), reversible, and sensitive (≤2 ppm), PS gas sensors, operating at room temperature, and based on a uniquely formed…
<div class="htmlview paragraph">Direct catalytic soot oxidation is expected to become an important component of future diesel particulate emission control systems. The development of advanced Catalytic Diesel Particulate Filters (CDPFs relies on the interplay of chemistry and geometry in order to enhance soot-ca…
The experimental total energy distribution (TED) of the field emitted electrons from a single pod of a ZnO tetrapod has been obtained, exhibiting a two-peak feature. The energy difference between the two peaks in the TED is found to be nearly equal to the band gap of the bulk ZnO. The results show that field emitted e…